Update date selection logic in app.py to sort dates in descending order

- Modified the date selection dropdown to display dates in descending order, improving user experience by prioritizing the most recent contests.
- Ensured that the selection logic remains consistent with the updated date format for further processing.

app.py

@@ -60,7 +60,7 @@ with tab1:
         contest_names, contest_id_map, curr_info = grab_contest_names(db, sport_select)
         
     with col3:
-        date_select = st.selectbox("Select Date", curr_info['Date'].unique(), key='date_select')
+        date_select = st.selectbox("Select Date", curr_info['Date'].unique().sort_values(ascending=False), key='date_select')
         
         name_parse = curr_info[curr_info['Date'] == date_select]['Contest Name'].reset_index(drop=True)
         date_select = date_select.replace('-', '')